Tim Butcher tracks down the boy who triggered the First World War. The story of Gavrilo Princip, the assassin who killed Archduke Franz Ferdinand in Sarajevo, can finally be told, freed from a century’s worth of historical muddle and political manipulation.

`A masterpiece of historical empathy and evocation… This book is a tour de force’ Guardian

History Book of the Year – Daily Telegraph
Best Book of the Year – The Sunday Times
History Book of the Year– Observer